Traffic coordination control system between crossings

Abstract

The invention relates to a traffic signal coordinated control device with a plurality of intersections, in which the system model 'green wavestrip'is not straight line but broken line and the ratio between inner trajectory slope of intersection and trajectory slope on the road equals coefficient of dampling of the said intersection. The device is provided to treat the design speed of the vehicles on the ground and inside the crossing in a same way. The device consists of a device of variable proportions, in which the device uses different scales to different components with a same length of oriented path: the ground lengths among crossings keep normal proportion of true size, but the measurement of the ground design length of gross ditch inside the crossing enlarges a multiple which is homologous to the coefficient of damping of crossing compared with measurement of the ground actual length of gross ditch inside the crossing, then drafts according to a normal proportion.

Description

technical field [0001] This patent application relates to a traffic signal coordination control system for multiple intersections, which is composed of a central computer and an almost synchronous standby intersection signal control device with almost synchronized clocks. The fixed spatial geometric parameters such as the length of the road surface and the number of road canals in the intersection are determined by the central computer of the traffic signal coordination control system according to the distribution of traffic demand and user requirements, including the speed range of the desired vehicle driving, and the participation of the intersection in coordination. The minimum green light time and the maximum green light time of the controlled phase are optimized offline or online, or the parameters designed offline are selected and determined, and the uniform period, phase difference, green signal ratio and other parameters of each intersection are output and given to each...

AI Technical Summary

Problems solved by technology

However, the following deficiencies are also shown in the operation: ...the control mode of motor vehicles and non-motor vehicles is not perfect, and there are still a large number of phenomena of mutual influence of traffic flow, which limits the control effect..."

Obviously, these curve models are too complex and inconvenient to design, so it is not suitable to use

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